Re: MAXSAVEDBLOCKS in netinet/tcp_sack.c

["P. de Boer" <pieter@xxxxxxxxxxxxxx>]

Noritoshi Demizu wrote:

> Sorry, actually, I always set net.inet.tcp.inflight_enable to zero
> both on DragonFlyBSD and FreeBSD in my experiences (I know it is zero
> on DragonFlyBSD by default, but I want to make it sure), because
> unfortunately it reduces throughput in my experiences in an unexpected
> way.
Just some extra input: I can confirm this. During TCP-performance tests (on
FreeBSD 5.4 machines) I saw a drop from around 700MBit/s to 300Mbit/s just
by turning on 'inflight'. Quite substantial, I'd say. 

-- 
Pieter